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A114103
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n multiples of n such that a(n) is a multiple of n. The n-th group contains n multiples of n. Arranged sequentially the n-th term is a multiple of n.
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2
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1, 2, 6, 12, 15, 6, 28, 8, 36, 20, 55, 60, 65, 70, 15, 48, 102, 18, 114, 60, 42, 154, 161, 168, 175, 182, 189, 28, 232, 120, 248, 32, 264, 136, 280, 72, 333, 342, 117, 360, 369, 126, 387, 396, 45, 230, 470, 240, 490, 50, 510, 260, 530, 270, 110, 616, 627, 638, 649
(list; table; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| T(n,k)=lcm[n,A000217(n-1)+k]. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 10 2007
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EXAMPLE
| 1, (2,6), (12,15,6), (28,8,36,20), (55,60,65,70,15),(48,102,18,114,60,42),...
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MAPLE
| A000217 := proc(n) n*(n+1)/2 ; end: T := proc(n, k) lcm(n, A000217(n-1)+k) ; end: for n from 1 to 20 do for k from 1 to n do printf("%d, ", T(n, k)) ; od ; od ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 10 2007
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CROSSREFS
| Cf. A114104, A114105.
Sequence in context: A027863 A152301 A152389 * A065154 A143408 A191331
Adjacent sequences: A114100 A114101 A114102 * A114104 A114105 A114106
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KEYWORD
| nonn,tabl
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 21 2005
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EXTENSIONS
| More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), May 10 2007
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